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Coupling of vibro-acoustic waves with premixed flame

Abstract : We investigate the coupling between a premixed flame freely propagating inside a Hele-Shaw burner and the mechanical vibrations of the burner structure. The combustion chamber deformations are not only able to damp the classical thermoacoustic instabilities but they can also trigger a new oscillating combustion instability. We demonstrate that the flow oscillations induced by the burner vibrations can be used to control the shape of the flame surface, by damping the Darrieus-Landau dynamics, or by triggering Faraday-like waves.
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Submitted on : Wednesday, May 20, 2020 - 4:59:22 PM
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Basile Radisson, Juliette Piketty-Moine, Christophe Almarcha. Coupling of vibro-acoustic waves with premixed flame. Physical Review Fluids, American Physical Society, 2019, 4 (12), ⟨10.1103/PhysRevFluids.4.121201⟩. ⟨hal-02496062⟩

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